Init
The Init subfolder contains low-level blocks that are necessary for initializing and connecting the ADS client.
Base Init
The Base Init block initializes and establishes a connection between ADS client and ADS router. The block checks the licenses on the target systems after a successful connection. After successful verification the block returns a valid handle to the ADS client.
Input/output | Meaning |
|---|---|
[0] XML Description | LabVIEW™ XML string with ADS read and write symbols or the path as a string to an existing, already created (exported) XML file. |
[4] Handle | Handle to the ADS client |
[8] LicenseState | List of license states of the TwinCAT target systems |
AddWrite Symbols
The Add ReadWrite Symbols block adds further symbols to the Client Handle. If new TwinCAT target systems are added, the block checks whether a valid license is available for each of the target systems. The result can be checked via the LicenseState output.
Input/output | Meaning |
|---|---|
[0][4] Handle | Handle to the ADS client |
[5] XMLDescription | LabVIEW™ XML string with symbols to be read or written, or string of the path to an existing XML file |
[6] LicenseState | List of license states of the TwinCAT target systems |
[7] Add Options | Options for dealing with multiple symbols: - NoDuplicateDefault: Checks whether a symbol with the same name, symbol name and symbol type already exists. If yes, this symbol is skipped. - DuplicateDefault: Adds the new symbols to the list without checking for duplicates. - UpdateDuplicateDefault: Checks whether a symbol with the same name, symbol name and symbol type already exists. If so, this symbol is updated. - NoDuplicateByName: Checks whether a symbol with the same name already exists. If yes, this symbol is skipped. - UpdateDuplicateByName: Checks whether a symbol with the same name already exists. If so, this symbol is updated. - ... |
[8] ReadGrpSymbols | List of symbols that are read via ADS |
[10] WriteGrpSymbols | List of symbols that are written via ADS |
Get List of Registered Targets
The Get List of Registered Targets block creates a list of ADS target systems which have been selected by the user in Symbol Interface or entered in the directly loaded XML file.
Input/output | Meaning |
|---|---|
[0][4] Handle | Handle to the ADS client |
[6] List of Registered Targets | List of registered target systems |
Get List of ReadWrite Symbols
The Get List of ReadWrite Symbols block creates a list of registered ADS read and write symbols, which have been selected by the user in Symbol Interface or entered in the directly loaded XML file.
Input/output | Meaning |
|---|---|
[0][4] Handle | Handle to the ADS client |
[5] List of Registered Targets | List of registered target systems |
[8] ReadGrpSymbols | List of ADS reading symbols |
[10] WriteGrpSymbols | List of ADS writing symbols |